Introduction
The best production CineWhoop solution to date from a popular hobbyist developer of FPV drones and main components for racing UAVs. The Flywoo CHASERS 138 is a 3″ CineWhoop drone built on a 138mm carbon fiber frame with a propulsion ring, using only the most high-tech components to meet the demands of today’s fast-paced hobby. Since its release (2020 model), the model has proven itself exceptionally well as a perfectly tuned drone from the factory for capturing the best outdoor and indoor aerial angles. As usual, let’s start with the key features of the quad.
Peculiarities
- Drone weight (without battery; with analog FPV system/Digital DJI): 273/306g
- The model is available in two versions 4S and 6S
- 138mm carbon frame with ring style motor guards
- Flight Controller: GOKUF722 Flight Controller
- ESC: 4-in-1 GOKU406S 50A BLheli_32 2-6S
- Motors (4S/6S drone version): B/C Flywoo ROBO RB 1507 4150KV/2900KV
- Propellers: 3-blade HSKRC 3045-3 (2CW/2CCW) + 3-blade Gemfan 75 (2CW/2CCW)
- FPV system (Digital/Analog optional): DJI Digital FPV system/FPV camera Caddx Ratel 2.1mm + 48CH 5.8GHz VTX GOKU TX-NANO with PIT/25/50/100/200/450mW adjustable power
- Receiver (optional): TBS Cross NANO/XM+
- Bluetooth module: Flywoo BT Nano
- Rear LED Light WS2812LED + Buzzer
- Recommended power: 4S/6S 1300-1550mAh LiPo with XT60 connector
Equipment
The developer offers CHASERS 138 in three iterations – this is an analog 6S version – the FPV system of which is built on analog components (FPV camera Caddx Ratel + 40-channel 5.8GHz VTX), and two digital 4S and 6S versions – the FPV system of which is implemented through a digital FPV system from DJI, which is currently the top technology in the drone hobby. Analog iteration is available as standard: without a receiver (PNP) and with a receiver (BNF). Digital – only in BNF.
Analog 6S version
- PNP package (without receiver)
- BNF Frsky XM+ equipment
- BNF TBS Cross NANO equipment
Digital 4S/6S version
- BNF DJI bundle (receiver built into DJI FPV module)
- BNF Frsky XM+ equipment
- BNF TBS Cross NANO equipment
*GoPro action camera not included.
Specification
Frame
Type of:
3″ Cinewhoop frame
Diagonal size:
138 mm
Material:
3K carbon fiber + TPU
Top plate thickness:
1.5mm
Bottom plate thickness:
2 mm
Compatible FPV Camera:
19/20 mm
Drone weight (without battery; with analog FPV system / with digital DJI):
273/306 g
PC
The product’s name:
GOKU F722DUAL FC
Mounting holes:
30.5 × 30.5 – 3 mm
MCU:
STM32F722RET6 216MHz
GYRO:
MPU6000
BARO:
BMP280/FLASH: 16M
Entrance. voltage:
3-8S/ BEC: 5V 2A/9V 2A
ESC
The product’s name:
GOKU 506S 50A ESC
Type of:
50A BLheli_32 2-6S 4-in-1 Brushless ESC
Continuous/Peak current:
50A/55A (10 seconds)
Entrance. voltage:
2-6S
Firmware:
GOKU32_PRO
Dshot support:
300/600/1200
LED backlight:
4 × WS2812
Current sensor:
Yes
Telemetry:
Yes
BEC output:
Not
The size:
42×42×4mm
Mounting Hole:
30.5 × 30.5 mm (M3)
The weight:
10 g
Motors
Name (4S/6S):
Flywoo ROBO RB 1507 4150KV/2900KV Motor
Stator diameter:
15 mm
Stator Height:
7 mm
KV (4S/6S):
4150KV/2900KV
Bearing:
NSK
Wire length:
150 mm
Shaft size:
M5
Location of fixing screws:
12×12mm
Entrance. voltage:
2-6S
Recommended propeller size:
3 inches
The weight:
15.6 g
video transmitter
Brand:
FLYWOO
Model:
GOKU TX-NANO
Slave. frequency range:
5362-5945 MHz
Power:
adjustable PIT/25/50/100/200/450 mW
Number of channels:
48
Connector:
UFL
Control mode:
IRC (RX)/Button
BAT:
input + 5V
Video system:
NTSC/PAL
Antenna:
IPX
Dimensions:
16×16×3.33mm
The weight:
1.4 g
fpv camera
Caddx Ratel
Brand:
caddx
Model:
ratel
Matrix:
1/1.8 inch starlight HDR
Horiz. permission:
1200TVL
TV system:
NTSC/PAL (switchable)
Picture Format:
16:9/4:3 (changeable)
WDR:
Super WDR (HDR)
Min. lighting:
starlight
Lens:
1.66mm, 2.1mm
Synchronization:
built-in
Electronic Shutter:
PAL: 1/50 ~ 100.000; NTSC: 1/60~100.000
Signal to noise ratio:
> 60 dB (AGC Off)
DJI FPV Camera
Matrix:
1/3.2″ CMOS; Number of effective pixels: 4 million
Lens:
2.1mm, f/2.1
Gate:
rolling shutter
ISO:
100-25600
FOV:
150°(D); 122°(X); 93°(V)
Dimensions:
22.1×21.1×20.1mm
The weight:
8.2 gr
bluetooth module
Brand:
Flywoo
Name:
BT-NANO Bluetooth module
Entrance. voltage:
3.3-5V
Signal transmission distance:
7 meters
bluetooth protocol:
Bluetooth V4.0 BLE
Slave. frequency range:
2400 MHz – 2483.5 MHz (2.4GHz ISM)
Baud Rate:
115200
MCU:
tick2541
Dimensions:
13.2×11.8mm
The weight:
0.4 g
battery
Recommended batteries:
4S/6S 1300-1550mAh LiPo with XT60 connector
Max. allowable size:
77 × 38.5 × 32.5 mm (L × W × H)
Appearance
*GoPro action camera not included.
Notes
Power point
- As noted above, the Flywoo CHASERS 138 drone is offered by the developer in 4S and 6S versions, the main difference between which is the motors. Thus, the 4S version is equipped with Flywoo ROBO RB 1507 4150KV motors, and the 6S version is equipped with Flywoo ROBO RB 1507 2900KV motors, respectively.
- Both versions are equipped with two different sets of propellers: 3-blade HSKRC 3045-3 (2CW/2CCW) + 3-blade Gemfan 75 (2CW/2CCW). On both kits, the quad demonstrates dynamics and stability that is indicative of a CineWhoop drone. The difference lies in the noise. In this connection, the developer recommends using HSKRC props when flying indoors, and Gemfan 75 is better suited for dynamic outdoor flight.
bluetooth module
- Flywoo CHASERS 138’s calling card is the built-in Flywoo BT Nano Bluetooth module, which allows the user to fully interact with the drone software through the free Speedy Bee mobile application.
PNP/BNF leadership
To view the manual in full size → move the cursor over the image → click the right mouse button → select “Open Image” from the menu that opens.
Price
Flywoo CHASERS 138 is sold both through branded stores and through various Internet trading platforms. Two configurations are available for purchase: digital and analog in 4S and 6S versions. Depending on the choice of configuration and type of receiver, the developer has set the following prices:
Digital 4S/6S version
- BNF DJI bundle — $390
- BNF Frsky XM+ bundle — $401
- BNF TBS Cross NANO bundle — $415
Analog 6S version
- PNP bundle (without receiver) — $270
- BNF Frsky XM+ bundle — $281
- BNF TBS Cross NANO bundle — $295
Conclusion
Perfectly tuned from the CineWhoop factory, with a well-engineered frame that ensures no windage even in windy conditions! The flight time of DJI 4S version with 4S 1500 mAh LiPo battery and GoPro Hero 8 on board averaged 4-5 minutes! On the one hand maintenance of the CHASERS 138 can be a bit of a tedious process as there are quite a few bolts for the top plate and air ducts, on the other hand it provides extra strength for the whole structure with the least weight! The built-in Micro Bluetooth module is a nice touch that makes setting up the quad through the Speedy Bee app super easy! In general, the model has proven itself exclusively from the best side, which is stated by numerous reviews on YT. We recommend CinWhoop as the best solution for expanding the creative potential in amateur aerial photography, both indoors and outdoors.
Video
Flywoo CHASERS 138 flight test.
Exhaustive reviews of Flywoo CHASERS 138 from users.